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<A href="introduction6.htm">Debugging Tools for Windows (WinDbg, KD, CDB, NTSD)</A> &gt; <A href="debugger_reference.htm">Debugger Reference</A> &gt; <A href="debugger_commands.htm">Debugger Commands</A> &gt; <A href="kernel_mode_extensions.htm">Kernel-Mode Extension Commands</A> &gt; </div>
	<div id="winchm_template_title">!ioreslist</div>
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	<div id="winchm_template_content"><div id="mainSection"><p>The <b>!ioreslist</b> extension displays an IO_RESOURCE_REQUIREMENTS_LIST structure.</p>
<pre class="syntax">
    <b>!ioreslist </b><i>Address</i> 
</pre>
<h2><a id="ddk__ioreslist_dbg"></a><a id="DDK__IORESLIST_DBG"></a>Parameters</h2>
<p></p>
<dl>
<dt><a id="_______Address______"></a><a id="_______address______"></a><a id="_______ADDRESS______"></a>       <i>Address</i>      </dt>
<dd>
<p>Specifies the hexadecimal address of the IO_RESOURCE_REQUIREMENTS_LIST structure.</p>
</dd>
</dl>
<h3><a id="DLL"></a><a id="dll"></a>DLL</h3>
<table>
<tr>
<td>
<p><b>
          Windows 2000
         </b></p>
</td>
<td>
<p>
          Kdextx86.dll
         </p>
</td>
</tr>
<tr>
<td>
<p><b>
          Windows XP and later
         </b></p>
</td>
<td>
<p>
          Kdexts.dll
         </p>
</td>
</tr>
</table>
<p> </p>
<h3><a id="Additional_Information"></a><a id="additional_information"></a><a id="ADDITIONAL_INFORMATION"></a>Additional Information</h3>
<p>See <a href="#Bookmark1479">Plug and Play Debugging</a> for applications of this extension command. For information about the IO_RESOURCE_REQUIREMENTS_LIST structure, see the Windows Driver Kit (WDK) documentation.</p>
<h2>Remarks</h2>
<p>Here is an example of the output from this extension:</p>
<div class="code"><span codelanguage=""><table>
<tr>
<th></th>
</tr>
<tr>
<td>
<pre>kd&gt; !ioreslist 0xe122b768

IoResList at 0xe122b768 : Interface 0x5  Bus 0  Slot 0xe
  Alternative 0 (Version 1.1)
    Preferred Descriptor 0 - Port (0x1) Device Exclusive (0x1)
      Flags (0x01) - PORT_IO
      0x000100 byte range with alignment 0x000100
      1000 - 0x10ff
    Alternative Descriptor 1 - Port (0x1) Device Exclusive (0x1)
      Flags (0x01) - PORT_IO
      0x000100 byte range with alignment 0x000100
      0 - 0xffffffff
    Descriptor 2 - DevicePrivate (0x81) Device Exclusive (0x1)
      Flags (0000) -
      Data:              : 0x1 0x0 0x0
    Preferred Descriptor 3 - Memory (0x3) Device Exclusive (0x1)
      Flags (0000) - READ_WRITE
      0x001000 byte range with alignment 0x001000
      40080000 - 0x40080fff
    Alternative Descriptor 4 - Memory (0x3) Device Exclusive (0x1)
      Flags (0000) - READ_WRITE
      0x001000 byte range with alignment 0x001000
      0 - 0xffffffff
    Descriptor 5 - DevicePrivate (0x81) Device Exclusive (0x1)
      Flags (0000) -
      Data:              : 0x1 0x1 0x0
    Descriptor 6 - Interrupt (0x2) Shared (0x3)
      Flags (0000) - LEVEL_SENSITIVE
      0xb - 0xb</pre>
</td>
</tr>
</table></span></div>
<p>The IO_RESOURCE_REQUIREMENTS_LIST contains information about:</p>
<ul>
<li>
<p>Resource types</p>
<p>There are four types of resources: I/O, Memory, IRQ, DMA.</p>
</li>
<li>
<p>Descriptors</p>
<p>Each preferred setting has a "Preferred" descriptor and a number of "Alternative" descriptors.</p>
</li>
</ul>
<p>This resource list contains the following requests:</p>
<ul>
<li>
<p>I/O Ranges</p>
<p>Prefers a range of 0x1000 to 0x10FF inclusive, but can use any 0x100 range between 0 and 0xFFFFFFFF, provided it is 0x100-aligned. (For example, 0x1100 to 0x11FF is acceptable.)</p>
</li>
<li>
<p>Memory</p>
<p>Prefers a range of 0x40080000 to 0x40080FFF, but can use any range that is of size 0x1000, is 0x1000-aligned, and is located between 0 and 0xFFFFFFFF.</p>
</li>
<li>
<p>IRQ</p>
<p>Must use IRQ 0xB.</p>
</li>
</ul>
<p>Interrupts and DMA channels are represented as ranges with the same beginning and end.</p></div></div>	
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